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-rw-r--r--servers/audio/audio_driver_dummy.cpp67
-rw-r--r--servers/audio/audio_driver_dummy.h22
2 files changed, 75 insertions, 14 deletions
diff --git a/servers/audio/audio_driver_dummy.cpp b/servers/audio/audio_driver_dummy.cpp
index 635e4601c7..60eb657923 100644
--- a/servers/audio/audio_driver_dummy.cpp
+++ b/servers/audio/audio_driver_dummy.cpp
@@ -33,22 +33,24 @@
#include "core/config/project_settings.h"
#include "core/os/os.h"
+AudioDriverDummy *AudioDriverDummy::singleton = nullptr;
+
Error AudioDriverDummy::init() {
active = false;
thread_exited = false;
exit_thread = false;
samples_in = nullptr;
- mix_rate = GLOBAL_GET("audio/driver/mix_rate");
- speaker_mode = SPEAKER_MODE_STEREO;
- channels = 2;
-
- int latency = GLOBAL_GET("audio/driver/output_latency");
- buffer_frames = closest_power_of_2(latency * mix_rate / 1000);
+ if (mix_rate == -1) {
+ mix_rate = GLOBAL_GET("audio/driver/mix_rate");
+ }
+ channels = get_channels();
samples_in = memnew_arr(int32_t, (size_t)buffer_frames * channels);
- thread.start(AudioDriverDummy::thread_func, this);
+ if (use_threads) {
+ thread.start(AudioDriverDummy::thread_func, this);
+ }
return OK;
};
@@ -93,11 +95,56 @@ void AudioDriverDummy::unlock() {
mutex.unlock();
};
+void AudioDriverDummy::set_use_threads(bool p_use_threads) {
+ use_threads = p_use_threads;
+}
+
+void AudioDriverDummy::set_speaker_mode(SpeakerMode p_mode) {
+ speaker_mode = p_mode;
+}
+
+void AudioDriverDummy::set_mix_rate(int p_rate) {
+ mix_rate = p_rate;
+}
+
+uint32_t AudioDriverDummy::get_channels() const {
+ static const int channels_for_mode[4] = { 2, 4, 8, 16 };
+ return channels_for_mode[speaker_mode];
+}
+
+void AudioDriverDummy::mix_audio(int p_frames, int32_t *p_buffer) {
+ ERR_FAIL_COND(!active); // If not active, should not mix.
+ ERR_FAIL_COND(use_threads == true); // If using threads, this will not work well.
+
+ uint32_t todo = p_frames;
+ while (todo) {
+ uint32_t to_mix = MIN(buffer_frames, todo);
+ lock();
+ audio_server_process(to_mix, samples_in);
+ unlock();
+
+ uint32_t total_samples = to_mix * channels;
+
+ for (uint32_t i = 0; i < total_samples; i++) {
+ p_buffer[i] = samples_in[i];
+ }
+
+ todo -= to_mix;
+ p_buffer += total_samples;
+ }
+}
+
void AudioDriverDummy::finish() {
- exit_thread = true;
- thread.wait_to_finish();
+ if (use_threads) {
+ exit_thread = true;
+ thread.wait_to_finish();
+ }
if (samples_in) {
memdelete_arr(samples_in);
};
-};
+}
+
+AudioDriverDummy::AudioDriverDummy() {
+ singleton = this;
+}
diff --git a/servers/audio/audio_driver_dummy.h b/servers/audio/audio_driver_dummy.h
index 68b523e086..232a8d5e1f 100644
--- a/servers/audio/audio_driver_dummy.h
+++ b/servers/audio/audio_driver_dummy.h
@@ -44,9 +44,9 @@ class AudioDriverDummy : public AudioDriver {
static void thread_func(void *p_udata);
- unsigned int buffer_frames;
- unsigned int mix_rate;
- SpeakerMode speaker_mode;
+ uint32_t buffer_frames = 4096;
+ int32_t mix_rate = -1;
+ SpeakerMode speaker_mode = SPEAKER_MODE_STEREO;
int channels;
@@ -54,6 +54,10 @@ class AudioDriverDummy : public AudioDriver {
bool thread_exited;
mutable bool exit_thread;
+ bool use_threads = true;
+
+ static AudioDriverDummy *singleton;
+
public:
const char *get_name() const {
return "Dummy";
@@ -67,7 +71,17 @@ public:
virtual void unlock();
virtual void finish();
- AudioDriverDummy() {}
+ void set_use_threads(bool p_use_threads);
+ void set_speaker_mode(SpeakerMode p_mode);
+ void set_mix_rate(int p_rate);
+
+ uint32_t get_channels() const;
+
+ void mix_audio(int p_frames, int32_t *p_buffer);
+
+ static AudioDriverDummy *get_dummy_singleton() { return singleton; }
+
+ AudioDriverDummy();
~AudioDriverDummy() {}
};